<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta http-equiv="X-UA-Compatible" content="IE=edge">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        *{
            padding: 0;
            margin: 0;
        }
        div{
            width: 300px;
            height: 300px;
            border: 1px solid red;
            margin: 30px auto;
            display: flex;
            flex-flow: column;
        }
        li{
            list-style: none;
        }
        .di{
            display: flex;
        }
        .di li{
            height: 60px;
            font-size: 40px;
            font-weight: 900;
            display: flex;
            flex: 1;
            justify-content: center;
            align-items: center;
            background: rgb(131, 51, 51);
            user-select: none;
            cursor: pointer;
        }
        .di1{
            position: relative;
            flex: 1;
            background: rgb(52, 15, 172);
        }
        .di1 li{
            width: 100%;
            height: 100%;
            display: none;
            position: absolute;
            justify-content: center;
            align-items: center;
            font-size: 100px;
            font-weight: 900;
        }
        .di .active{
            background: rgb(35, 140, 11);
        }
        .di1 .active{
            display: flex;
        }
    </style>
</head>
<body>
    <div class="container">
        <ul class="di">
            <li class="active">1</li>
            <li>2</li>
            <li>3</li>
        </ul>
        <ol class="di1">
            <li class="active">一</li>
            <li>二</li>
            <li>三</li>
        </ol>
    </div>
</body>
</html>
<script>
    // const firstli = document.querySelectorAll('.di li')
    // const lastli = document.querySelectorAll('.di1 li')
    // firstli.forEach( (li,i) => {
    //     li.onclick = function() {

    //         {
    //             firstli.forEach(li => {
    //                 li.classList.remove('active')
    //             })
    //             this.classList.add('active')
    //         }

    //         {
    //             const lis = lastli[i]
    //             lastli.forEach(li =>{
    //                 li.classList.remove('active')
    //             })
    //             lis.classList.add('active')
    //         }

    //     }
    // });
</script>
<script>
    function Tob(container){
        container = typeof container === 'string'
        ? document.querySelector(container)
        : container
        this._tobs = container.querySelectorAll('ul > li');
        this._bodys = container.querySelectorAll('ol > li');
    }
    Tob.prototype.lib = function(){
        this._tobs.forEach((tab,i) => {

                tab.onclick = () => {
                    {
                        this._tobs.forEach(tab => {
                            tab.classList.remove('active')
                        })
                        tab.classList.add('active')

                    }
                    {

                        this._bodys.forEach(bod => {
                            bod.classList.remove('active')
                        })
                        this._bodys[i].classList.add('active')
                    }
                }




        });
    }
    const container = document.querySelector('.container')
    const as = new Tob(container)
    as.lib()

</script>